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More amps on the same size conductors, for your toughest transmission challenges

ProvenSolutions

to IncreaseCapacity

3M™ Aluminum Conductor Composite Reinforced (ACCR)Technical Summary for Common Constructions and Sizes Metric Units

To learn more about 3M ACCR, or to down-load the PLS-CADD™ data files, visit us at www.3M.com/ACCR

Physical Properties Unit Ostrich 300 Linnet 336 Hawk 477 Dove 557

Designation ACCR_297-T16 ACCR_340-T16 ACCR_470-T16 ACCR_573-T16Stranding 26/7 26/7 26/7 26/7Diameter Individual Core Wire mm 2.1 2.3 2.7 2.9 Individual Al Wire mm 2.7 2.9 3.4 3.8 Total Core mm 6.3 6.8 8.0 8.8 Total Conductor mm 17.2 18.4 21.6 23.9Area Aluminum mm2 150 172 238 291 Total Area mm2 175 200 277 338Weight Core N/m 0.838 0.957 1.319 1.604 Aluminum N/m 4.079 4.668 6.462 7.879 Total Weight N/m 4.916 5.625 7.781 9.483Strength N 53,823 61,830 85,406 102,754Thermal Elongation Core 10-6/°C 6.3 6.3 6.3 6.3 Aluminum 10-6/°C 23.0 23.0 23.0 23.0 Complete Cable 10-6/°C 16.7 16.7 16.7 16.7Heat Capacity Core W-sec/m-°C 28 32 44 53 Aluminum W-sec/m-°C 398 455 629 767

Electrical Properties

Resistance DC @ 20°C ohms/km 0.1826 0.1596 0.1153 0.0945 AC @ 25°C ohms/km 0.1870 0.1634 0.1180 0.0968 AC @ 50°C ohms/km 0.2055 0.1795 0.1297 0.1064 AC @ 75°C ohms/km 0.2240 0.1957 0.1414 0.1159 AC @ 100°C ohms/km 0.2425 0.2119 0.1530 0.1255 AC @ 210°C ohms/km 0.3239 0.2830 0.2045 0.1677 AC @ 240°C* ohms/km 0.3461 0.3024 0.2185 0.1792Geometric Mean Radius mm 6.97 7.46 8.78 9.69Reactance (0.315 m spacing, 60 hz) Inductive Xa ohms/km 0.2848 0.2797 0.2675 0.2600 Capacitive X'a Mohms-km 0.1704 0.1671 0.1594 0.1546Ampacity 210° C amps 863 942 1,168 1,332 240° C* amps 924 1,011 1,254 1,431

* Emergency operating temperature, 1,000 hours cumulative over the life of the conductor. Ampacity ratings were calculated using IEEE Std. 738-1993, with inputs of 40°C air temperature, 0.6 m/s wind, and emissivity and absorptivity of 0.5, at sea level.

3M Aluminum Conductor Composite Reinforced (ACCR) is an all-aluminum-based conductor designed as a drop-in replacement for ACSR and ACSS. Its properties enable transmission capacity increases, up to twice as much or more, on existing structures, while matching or improving tensions and clearances.

The round-wire construction is composed of a multi-strand, aluminum-matrix core surrounded

by aluminum-zirconium outer wires that are round in shape.

Round-wire, the most commonly used transmission conductor construction, frequently offers the largest capacity increase because of its low weight, allowing it to operate at high temperatures with less sag than steel core conductors and other types of construction, such as trapwire or compact conductors.

3M™ ACCR Round-wire SpecificationsThe strong, lightweight, high capacity conductor

3M™ ACCR Technical Summary

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For a complete library of lab and field tests, organized by both conductor size and test subject, visit our website: www.3M.com/ACCR

Grosbeak 636 Drake 795 Cardinal 954 Curlew 1033 Bittern 1272 Martin 1351 Lapwing 1590

ACCR_656-T16 ACCR_824-T16 ACCR_967-T13 ACCR_1036-T13 ACCR_1238-T11 ACCR_1334-T13 ACCR_1594-T1126/19 26/19 54/19 54/19 51/19 54/19 51/19

1.9 2.1 2.0 2.1 2.1 2.4 2.44.0 4.5 3.4 3.5 4.0 4.0 4.59.4 10.6 10.2 10.6 10.6 12.0 12.0

25.5 28.6 30.6 31.7 34.3 35.9 38.9

332 418 490 525 627 676 808385 484 552 591 694 761 894

1.790 2.246 2.099 2.246 2.246 2.886 2.8869.008 11.330 13.356 14.304 17.098 18.420 22.01710.799 13.576 15.455 16.550 19.344 21.305 24.903113,874 143,233 147,681 158,357 171,256 201,504 220,187

6.3 6.3 6.3 6.3 6.3 6.3 6.323.0 23.0 23.0 23.0 23.0 23.0 23.016.5 16.5 17.1 17.1 17.8 17.1 17.8

59 75 70 75 75 97 97877 1,102 1,299 1,391 1,662 1,790 2,140

0.0828 0.0658 0.0572 0.0534 0.0450 0.0414 0.03500.0848 0.0674 0.0585 0.0546 0.0461 0.0424 0.03580.0932 0.0741 0.0643 0.0600 0.0507 0.0466 0.03940.1016 0.0808 0.0701 0.0655 0.0552 0.0508 0.04290.1100 0.0874 0.0759 0.0709 0.0598 0.0550 0.04640.1469 0.1168 0.1014 0.0947 0.0799 0.0735 0.06200.1570 0.1248 0.1083 0.1012 0.0854 0.0786 0.066310.37 11.62 12.39 12.82 13.80 14.55 15.66

0.2549 0.2463 0.2415 0.2389 0.2334 0.2294 0.22380.1514 0.1460 0.1428 0.1412 0.1364 0.1352 0.1309

1,453 1,692 1,857 1,943 2,171 2,299 2,5691,562 1,820 1,999 2,092 2,338 2,479 2,771

Conformance to National Standards

All materials shall conform to the applicable American National Standards Institute (ANSI) C119.4; American Society for Testing and Materials (ASTM) Standards B193, B557, B941, B976-11; or International Annealed Copper Standard (IACS).

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Conductor Physical Properties Hawk 477TW Mohawk Oswego Wabash Suwanee Curlew 1033 TW Hudson Thames Pecos

Diameter Equivalent Round-wire Unit Flicker Dove Grosbeak Drake Cardinal Finch Martin

Designation ACCR-TW_477-T16 ACCR-TW_572-T13 ACCR-TW_665-T16 ACCR-TW_763-T16 ACCR-TW_958-T16 ACCR-TW_1033-T13 ACCR-TW_1158-T13 ACCR-TW_1335-T13 ACCR-TW_1622-T13Stranding 18/7 18/7 20/19 20/19 22/19 22/19 24/19 39/19 38/19Diameter Individual Core mm 2.7 2.7 1.9 2.0 2.3 2.1 2.3 2.4 2.7 Individual Aluminum mm NA NA NA NA NA NA NA NA NA Core mm 8.0 8.0 9.4 10.2 11.3 10.6 11.3 12.0 13.3 Total Conductor Diameter mm 20.0 21.6 23.6 25.2 28.1 28.8 30.5 32.8 36.0Area Aluminum mm2 242 290 337 387 486 523 587 676 822 Total Area mm2 281 329 390 449 562 590 663 762 927Weight Core N/m 1.319 1.319 1.790 2.099 2.568 2.246 2.568 2.886 3.545 Aluminum N/m 6.533 7.833 9.107 10.449 13.126 14.147 15.859 18.388 22.344 Total Weight N/m 7.851 9.151 10.898 12.548 15.693 16.393 18.426 21.274 25.889Strength N 85,148 92,079 115,017 133,295 164,947 158,706 179,658 201,951 247,420Thermal Elongation Core 10-6/°C 6.3 6.3 6.3 6.3 6.3 6.3 6.3 6.3 6.3 Aluminum 10-6/°C 23.0 23.0 23.0 23.0 23.0 23.0 23.0 23.0 23.0 Complete Cable 10-6/°C 16.8 17.5 16.5 16.4 16.5 17.3 17.3 17.1 17.1Heat Capacity Core W-sec/m-°C 44 44 59 70 85 74 85 96 119 Aluminum W-sec/m-°C 636 763 887 1,017 1,277 1,377 1,543 1,788 2,172

Conductor Electrical Properties

Resistance DC @ 20°C ohms/km 0.1134 0.0956 0.0814 0.0709 0.0565 0.0531 0.0473 0.0413 0.0340 AC @ 25°C ohms/km 0.1161 0.0979 0.0834 0.0726 0.0579 0.0544 0.0484 0.0423 0.0348 AC @ 50°C ohms/km 0.1276 0.1076 0.0916 0.0797 0.0636 0.0597 0.0532 0.0465 0.0382 AC @ 75°C ohms/km 0.1391 0.1173 0.0999 0.0869 0.0693 0.0651 0.0580 0.0507 0.0417 AC @ 100°C ohms/km 0.1505 0.1269 0.1081 0.0941 0.0750 0.0705 0.0628 0.0549 0.0451 AC @ 210°C ohms/km 0.2011 0.1696 0.1445 0.1257 0.1003 0.0942 0.0839 0.0733 0.0603 AC @ 240°C* ohms/km 0.2149 0.1812 0.1544 0.1343 0.1071 0.1006 0.0897 0.0783 0.0644Geometric Mean Radius mm 8.16 8.68 9.58 10.25 11.37 11.43 12.08 12.99 14.29Reactance (1 ft spacing, 60hz) Inductive Xa ohms/km 0.2730 0.2683 0.2608 0.2558 0.2479 0.2476 0.2434 0.2379 0.2307 Capacitive X'a Mohms-km 0.1630 0.1594 0.1551 0.1520 0.1468 0.1458 0.1429 0.1396 0.1351Ampacity 210°C amps 1,148 1,282 1,427 1,564 1,813 1,885 2,035 2,232 2,537 240°C* amps 1,232 1,377 1,533 1,681 1,951 2,029 2,191 2,404 2,736

3M brings its reputation for reliability to trapwire conductors

3M offers a full line of trapwire, or compact, conductors with diameters comparable to standard conductors.

Trapwire designs replace the round outer wires of the conductor with trapezoidal-shaped wires, in order to maximize the amount of current-carrying aluminum

within the same total diameter. The result is an increase in conductivity that may reduce resistive losses on the line. Work with your 3M representative to choose the best solution for your application, considering your capacity needs and the characteristics of your specific project.

3M™ ACCR Trapwire SpecificationsHigher conductivity in higher amp applications

Because the trapezoidal shape of the outer wires incorporates more aluminum, the weight and sag may increase slightly compared to diameter-equivalent round wire designs. Your 3M representative can help you choose the optimal combination of conductor properties for your application.

* Emergency operating temperature, 1,000 hours cumulative over the life of the conductor. Ampacity ratings were calculated using IEEE Std. 738-1993, with inputs of 40°C air temperature, 0.6 m/s wind, and emissivity and absorptivity of 0.5, at sea level.


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Conductor Physical Properties Hawk 477TW Mohawk Oswego Wabash Suwanee Curlew 1033 TW Hudson Thames Pecos

Diameter Equivalent Round-wire Unit Flicker Dove Grosbeak Drake Cardinal Finch Martin

Designation ACCR-TW_477-T16 ACCR-TW_572-T13 ACCR-TW_665-T16 ACCR-TW_763-T16 ACCR-TW_958-T16 ACCR-TW_1033-T13 ACCR-TW_1158-T13 ACCR-TW_1335-T13 ACCR-TW_1622-T13Stranding 18/7 18/7 20/19 20/19 22/19 22/19 24/19 39/19 38/19Diameter Individual Core mm 2.7 2.7 1.9 2.0 2.3 2.1 2.3 2.4 2.7 Individual Aluminum mm NA NA NA NA NA NA NA NA NA Core mm 8.0 8.0 9.4 10.2 11.3 10.6 11.3 12.0 13.3 Total Conductor Diameter mm 20.0 21.6 23.6 25.2 28.1 28.8 30.5 32.8 36.0Area Aluminum mm2 242 290 337 387 486 523 587 676 822 Total Area mm2 281 329 390 449 562 590 663 762 927Weight Core N/m 1.319 1.319 1.790 2.099 2.568 2.246 2.568 2.886 3.545 Aluminum N/m 6.533 7.833 9.107 10.449 13.126 14.147 15.859 18.388 22.344 Total Weight N/m 7.851 9.151 10.898 12.548 15.693 16.393 18.426 21.274 25.889Strength N 85,148 92,079 115,017 133,295 164,947 158,706 179,658 201,951 247,420Thermal Elongation Core 10-6/°C 6.3 6.3 6.3 6.3 6.3 6.3 6.3 6.3 6.3 Aluminum 10-6/°C 23.0 23.0 23.0 23.0 23.0 23.0 23.0 23.0 23.0 Complete Cable 10-6/°C 16.8 17.5 16.5 16.4 16.5 17.3 17.3 17.1 17.1Heat Capacity Core W-sec/m-°C 44 44 59 70 85 74 85 96 119 Aluminum W-sec/m-°C 636 763 887 1,017 1,277 1,377 1,543 1,788 2,172

Conductor Electrical Properties

Resistance DC @ 20°C ohms/km 0.1134 0.0956 0.0814 0.0709 0.0565 0.0531 0.0473 0.0413 0.0340 AC @ 25°C ohms/km 0.1161 0.0979 0.0834 0.0726 0.0579 0.0544 0.0484 0.0423 0.0348 AC @ 50°C ohms/km 0.1276 0.1076 0.0916 0.0797 0.0636 0.0597 0.0532 0.0465 0.0382 AC @ 75°C ohms/km 0.1391 0.1173 0.0999 0.0869 0.0693 0.0651 0.0580 0.0507 0.0417 AC @ 100°C ohms/km 0.1505 0.1269 0.1081 0.0941 0.0750 0.0705 0.0628 0.0549 0.0451 AC @ 210°C ohms/km 0.2011 0.1696 0.1445 0.1257 0.1003 0.0942 0.0839 0.0733 0.0603 AC @ 240°C* ohms/km 0.2149 0.1812 0.1544 0.1343 0.1071 0.1006 0.0897 0.0783 0.0644Geometric Mean Radius mm 8.16 8.68 9.58 10.25 11.37 11.43 12.08 12.99 14.29Reactance (1 ft spacing, 60hz) Inductive Xa ohms/km 0.2730 0.2683 0.2608 0.2558 0.2479 0.2476 0.2434 0.2379 0.2307 Capacitive X'a Mohms-km 0.1630 0.1594 0.1551 0.1520 0.1468 0.1458 0.1429 0.1396 0.1351Ampacity 210°C amps 1,148 1,282 1,427 1,564 1,813 1,885 2,035 2,232 2,537 240°C* amps 1,232 1,377 1,533 1,681 1,951 2,029 2,191 2,404 2,736

Conformance to National Standards

All materials shall conform to the applicable American Society for Testing and Materials (ASTM) Standards B193, B557, B941, B976-11; or International Annealed Copper Standard (IACS).

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Core StrandsThe core strands are composed of wires formed from aluminum oxide fibers embedded in high-purity aluminum. This type of material is called a fiber reinforced metal matrix. It contains NO polymers or plastic. The properties that give the conductor its advantages are conferred by the core. The key advantages of the ACCR core, compared to conventional steel cores used in ACSR and ACSS, are its:

• Higher strength to weight ratio and

• Lower thermal expansion

These two properties result in lower sag at higher operating temperatures, enabling higher ampacities at equivalent tensions and clearances.

Core Property Comparison: ACCR vs. ACSR/ACSS

Conductor Core Material

ACCR Aluminum

MatrixACSR/ACSS

Steel

Strength (MPa) 1,378 1,275

Density (g/cm3) 3.29 7.8

Strength/Density 419 163

Coefficient of Thermal Expansion (10-6/°C) 6.3 12.1

Some of the secondary properties of the core are also favorable. These include low creep, higher electrical conductivity (from the aluminum constituent), durability and longevity equivalent to ACSR, and corrosion resistance without coatings or barriers, (similar to all-aluminum conductors).

Aluminum StrandsThe aluminum strands are composed of an aluminum-zirconium alloy. They are available in both round and trapezoidal shapes. The minimum conductivity of any individual aluminum strand is not less than 60 percent of the International Annealed Copper Standard (IACS).

The aluminum-zirconium strands are a hard drawn aluminum with mechanical properties very similar to 1350-H19 aluminum (23-25 ksi, 158-172 MPa ultimate tensile strength). This is NOT a soft annealed aluminum. The addition of a small amount of zirconium to the aluminum confers the property of heat resistance. That is, the aluminum-zirconium may be heated to high temperatures without softening (annealing). Thus when the aluminum-zirconium cools to ambient temperatures, it retains its strength.

Conductor Stranding3M ACCR uses constructions that are very similar to ACSR. It uses most of the same dimensions for wire sizes and conductor sizes. Aluminum-zirconium layers are helically stranded using the same lay lengths and lay directions as ACSR. The core wires are also helically stranded. Both the core and outer strands contribute to the strength and conductivity of the conductor.


Physical Characteristics3M™ Aluminum Conductor Composite Reinforced (ACCR) is a transmission conductor designed to significantly increase capacity on existing structures, even in challenging situations and environments.

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3M™ Aluminum Matrix Core


ampsstructures

on existingMore

Technical SupportFinding the right solution can require knowledgeable support. Our experienced technical team, with their proven record of successful solutions, can help you with:

• Balancing capacity, efficiency, mechanical load, clearance, economic and environmental objectives to find the best solution;

• Evaluating line characteristics to define the right mix of conductor and accessories;

• Providing you with data and information on the phone, through e-mail or on-site;

• Assisting you to compare options in PLS-CADD™, SAG10™ and other design software;

• Supporting your installation crew with training and consultation throughout the process.

All to provide you the most value from your upgrade and ensure a successful project.

Contact our technical team by calling your local 3M office or e-mailing [email protected], or visit www.3M.com/accr for more information.

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TECHNICAL INFORMATION AND DATA; PRODUCT USE. Technical information and data, recommendations, and other statements provided by 3M are based on information, tests, or experience which 3M believes to be reliable, but the accuracy or completeness of such information is not guaranteed. Before use, Buyer must evaluate and determine whether the 3M product is suitable and appropriate for a particular use and intended application.

WARRANTY AND LIMITED REMEDY. Unless stated otherwise in 3M’s product literature, packaging inserts or product packaging for individual products, 3M warrants that each 3M product meets the applicable specifications at the time 3M ships the product. Individual products may have additional or different warranties as stated on product literature, package inserts or product packages. 3M MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY IMPLIED WARRANTY ARISING OUT OF A COURSE OF DEALING, CUSTOM OR USAGE OF TRADE.

Electrical Markets Division 3M High Capacity Conductors3M Center, Building 251-2A-39St. Paul, MN 55144-1000Phone: 800-245-3573Fax: 651-736-0431www.3M.com/ACCR

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Please recycle. Printed in USA.Issued: 11/11 © 3M 2011. All rights reserved. 8230HB 80-6016-0280-0 B

PLS-CADD is a trademark of Power Line Systems, Inc.SAG10 is a trademark of Southwire Company.3M is a trademark of 3M Company. Used under license by 3M subsidiaries and affiliates.


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